There are currently issues with VMware Server 2.0.x. The Workstation and Server 1.x products do not seem to suffer from the same problems. I've been using
I'm using KVM virtual machines managed through libvirtd server-side for most of my projects.
I installed VMware Desktop 9, first as an update to VMware Workstation 8.03, and everything went smooth the installer told me that VM Workstation 8 would be uninstalled and VM Workstation 9 installed...